Cmp - compare instruction

The cmp instruction make a comparison between two registers and the status flag is set accordingly. Internaly, the cmp instruction works by substrating the first register to the second register, the result is not stored, only the flags are set.
To use the result stored in flags, you can use one of the Bxx instructions.

Forms and variants

ry = Source register 1
rx = Source register 2

Instruction encoding

S = Source register 1
D = Source register 2

Code Examples

// Example : Compare two numbers

; r0 = number 1
; r1 = number 2

start:    cmp.l r0,r1
          beq equal
          bne notequal

equal:    ; do something, numbers are equal

notequal: ; do something, numbers are not equal